To get a cross tab, you can use the following technique. Only one query is needed.
SELECT state, 
sum(IF(month(identifier)=1,1,0)) as 'Jan',
sum(IF(month(identifier)=2,1,0)) as 'Feb',
sum(IF(month(identifier)=3,1,0)) as 'Mar',
count(*) as TOTAL
from contacts
WHERE state != ''
GROUP BY state;

[download]
And you should get a result like :
+----------+-----+-----+----+-------+
| state    | Jan | Feb | Mar| Total |
+----------+-----+-----+----+-------+
| NY       |  10 | 12  | 11 |    33 |
| IL       |  15 | 14  | 15 |    44 |
| TX       |  25 | 20  | 22 |    67 |
+----------+-----+-----+----+-------+

[download]
Check this article for a step-by-step tutorial on how to use Perl to get get the values for your columns in the query without doing it manually. The article is specific for MySQL, but the algorithm works on any DBMS.
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(_|| | |(_|><
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[download]

In reply to Re: Selecting and ordering data over multiple date ranges by gmax
in thread Selecting and ordering data over multiple date ranges by peppiv

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